rate = int(input())
if 400 <= rate < 600:
  print("8")
elif 600 <= rate <800:
  print("7")
elif 800 <= rate <1000:
  print("6")
elif 1000 <= rate <1200:
  print("5")
elif 1200 <= rate <1400:
  print("4")
elif 1400 <= rate <1600:
  print("3")
elif 1600 <= rate <1800:
  print("2")
elif 1800 <= rate <2000:
  print("1") rate = int(input()) rate int(input()) int input() input if 400 <= rate < 600:
  print("8")
elif 600 <= rate <800:
  print("7")
elif 800 <= rate <1000:
  print("6")
elif 1000 <= rate <1200:
  print("5")
elif 1200 <= rate <1400:
  print("4")
elif 1400 <= rate <1600:
  print("3")
elif 1600 <= rate <1800:
  print("2")
elif 1800 <= rate <2000:
  print("1") 400 <= rate < 600 400 <= rate 400 rate 600 print("8") print "8" elif 600 <= rate <800:
  print("7") 600 <= rate <800 600 <= rate 600 rate 800 print("7") print "7" elif 800 <= rate <1000:
  print("6") 800 <= rate <1000 800 <= rate 800 rate 1000 print("6") print "6" elif 1000 <= rate <1200:
  print("5") 1000 <= rate <1200 1000 <= rate 1000 rate 1200 print("5") print "5" elif 1200 <= rate <1400:
  print("4") 1200 <= rate <1400 1200 <= rate 1200 rate 1400 print("4") print "4" elif 1400 <= rate <1600:
  print("3") 1400 <= rate <1600 1400 <= rate 1400 rate 1600 print("3") print "3" elif 1600 <= rate <1800:
  print("2") 1600 <= rate <1800 1600 <= rate 1600 rate 1800 print("2") print "2" elif 1800 <= rate <2000:
  print("1") 1800 <= rate <2000 1800 <= rate 1800 rate 2000 print("1") print "1" rate = int(input()) int(input()) rate
rate = int(input())
if 400 <= rate < 600:
  print("8")
elif 600 <= rate <800:
  print("7")
elif 800 <= rate <1000:
  print("6")
elif 1000 <= rate <1200:
  print("5")
elif 1200 <= rate <1400:
  print("4")
elif 1400 <= rate <1600:
  print("3")
elif 1600 <= rate <1800:
  print("2")
elif 1800 <= rate <2000:
  print("1")
